Question

我使用spring数据和hibernate @ Filter / @ FilterDef来过滤软删除的实体。看起来springRepository.findOne（id）总是返回值，即使id被软删除也是如此。过滤器不包含在此方法的where子句中，也不包含在另一个外键字段中进行搜索。在这种情况下是否可以启用过滤器，以便它可以作为@Where注释使用？

Answer 1

我遇到了同样的问题。我通过实现HibernatePersistenceProvider和HibernateEntityManagerFactory类来解决它。

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每次会话初始化后，将启用过滤器。现在你需要将FilterEnableHibernatePersistenceProvider添加到你的配置类：

public class FilterEnableHibernatePersistenceProvider extends HibernatePersistenceProvider {

    @Override
    public EntityManagerFactory createEntityManagerFactory(String persistenceUnitName, Map properties) {
        return wrapEntityManagerFactory(super.createEntityManagerFactory(persistenceUnitName, properties));
    }

    @Override
    public EntityManagerFactory createContainerEntityManagerFactory(PersistenceUnitInfo info, Map properties) {
        return wrapEntityManagerFactory(super.createContainerEntityManagerFactory(info, properties));
    }

    private EntityManagerFactoryWrapper wrapEntityManagerFactory(EntityManagerFactory entityManagerFactory) {
        return entityManagerFactory == null
            ? null
            : new EntityManagerFactoryWrapper(entityManagerFactory);
    }


public static class EntityManagerFactoryWrapper implements HibernateEntityManagerFactory {

    //This is where the filters are being activated
    protected EntityManager initSession(EntityManager entityManager) {
        Session session = ((HibernateEntityManager) entityManager).getSession();
        if (session.getEnabledFilter(FILTER_NAME) == null) {
            Filter activeFilter = session.enableFilter(FILTER_NAME);
            activeFilter.setParameter("some_field", some_value);
        }
        return entityManager;
    }

    // wrapp other methods

}

在按主键/外键搜索时启用Hibernate过滤器

1 个答案: